The private data members of a class cannot be accessed by functions that are not a part of the class. The access to such members can only be given to the functions by specifying the function as friend of the class whose data structures are required by the function. In simple words, we can say that a friend function has an advantage of having an access to the private data members of the friend class. A function can be specified as a friend of a class by including its prototype Read More

A null modem cable will enable you to connect two computers together for serial communications. It is a particularly designed cable that permits anyone to connect two computers directly to each other via their communications ports called RS-232 ports. Serial communications with RS232 is one of the oldest and most widely spread communication methods in computer realm. Null modems are specially helpful with portable computers because they enable the portable computer to exchange data with a bigger machine. Null modem cables have the TD (Transmit Data) and RD (Recieve Data) Read More

A Hyanide is a radical new vehicle design incorporating the characteristics of a snowmobile, an all-terrain vehicle or ATV and a motorcycle. It can go over snow, rough terrain and the highway. It was named Hyanide because of its similarity in appearance to a crouching hyena. The Hyanide does not use wheels or skis but uses a tank-like thread spanning the whole underside of the machine. Since all the Hyanide needs in order to move is to have any part of the thread touching the ground, it will be able Read More

In order to functionally activate Microsoft Windows Vista OS versions using the Windows Vista activation wizard, you need to do the following: Click on the Start button found on the leftmost bottom portion of the desktop Click on the Computer option from the selection Then click on Properties from the list of options Click on the Click Here option in order to functionally activate your Windows Vista OS version (please be advised that in order to do this, you would need to have administrator permission privileges) Afterwards, you can key Read More

Quantum computer technology involves the use of the quantum particle as a replacement for the bit of today’s computers. The theory for quantum computers began over 20 years ago with Paul Benioff, a physicist at the Argonne National Laboratory, who used the concept of the Turing machine as a model for the quantum computer. A Turing machine is composed of a tape of indefinite length that can be divided into evenly sized squares. A device capable of reading the blanks and symbols in the tape is used to give instructions Read More

High performance computers have been around for a little longer than two decades but it wasn't until the early 1990s that the international community decided that they needed a new way of assessing and measuring supercomputers. In 1993, a benchmark test and subsequent list known as the Top500 was born. The Top500 is responsible for categorizing the power and capabilities of the top 500 high performance computers in the world. The majority of this article will list the manufacturers of the top 10 supercomputers of that list and describe the Read More

Windows Media Player ships with all Windows Operating Systems and is currently the most popular media player in the world. Windows Media Player allows users to listen to music and watch a vast number of movies and television shows in a sleek interface while having full control over how large the video is. Windows Media Player can be zoomed in up to 200% and can be used to play virtually any file format. Windows Media Player also includes a built-in webstore and features several options for synchronization with external devices. Read More

Picture quality is a general term used by the viewer to rate the inherent quality of the image. It is mainly subjective, meaning that each viewer rates the picture quality differently. Some people may think that an image is high enough quality, but you may have an individual with higher standards that may say the image lacks quality or sharpness. Picture quality is used in a general sense. With digital images, many people are able to rate and categorize images based on bits of information or pixels that create an Read More

MySQL Tutorials Welcome to our MySQL Tutorial section. This will provide you a comprehensive MySQL lessons and tutorial along with practical examples. MySQL One Liners You will find a collection of one-line commands for MySQL here. MySQL FULLTEXT Searching Tutorial Here, you will find a tutorial that shows how to perform MySQL Fulltext searching. This allos database administrators, programmers easily designate any (CHAR, VARCHAR, or TEXT) character-based field as a FULLTEXT index MySQL Sub Queries Tutorial This section will teach you how to write subqueries in MySQL. Subqueries can do advanced queries Read More

The argument over whether to use CCD or CMOS has led some industries to suggest one is greater than the other. The truth about them is that they both have very unique strengths and weaknesses. This results in advantages when dealing with different applications. Both do the same thing. Both are imagers that convert light into an electric charge. It then takes this electric charge and processes it into electronic signals. These signals can then be used by the computer. What is CCD? CCD is a charge coupled device. This Read More